I'm about to place my order from shop.ehobbyasia.com (can anyone confirm if this place is reliable?) but before I check out I would like to make sure I'm not purchasing something that won't be compatible.
Echo1 ER25K (400-410 fps with .20g BB's)
The barrel I am looking at
Are tight bores universal to all hop ups? And are buckings universal to all tight bores?
Firefly bucking, however, I am not sure if I should go for hard or soft due to my fps...